In each blank, try to type in the
word that is missing. If you've
typed in the correct word, the
blank will turn green.
If your not sure what answer should be entered, press the space bar and the next missing letter will be displayed. When you are all done, you should look back over all your answers and review the ones in red. These ones in red are the ones which you needed help on. Question: The term for membranes which allow some to pass through while blocking passage of other molecules.Answer: Permeability Question: Another name for passive .Answer: Facilitated Question: This term describes equal solute concentrations inside and of the cell.Answer: Question: When the concentration is less.Answer: Question: Small sacs (circles) of membrane are called _______.Answer: Question: This is the diffusion of across a semi-permeable membrane.Answer: Question: region of the phospholipid molecule is hydrophyllic?Answer: The Glycerol Question: Is it the proteins or the fatty acid tails which are for giving the "Fluid Mosaic Model" of the plasma membrane its MOSAIC portion of the name?Answer: The insertion of the . Question: A cell with an salt concentration of 0.1% salt is placed in a solution of 2% salt solution. Is the solution surrounding the cell considered hypotonic or hypertonic?Answer: The solution surrounding the cell is hypertonic . Question: Does diffusion move down or up the concentration gradient?Answer: Down Question: The process a cell uses to particles into the cell by pinching off a small circle of membrane to form a vesicle enclosing the particles.Answer: Endocytosis Question: In a solution consisting of salt dissolved in water, which is the ?Answer: salt Question: Which region of the phospholipid are hydrophobic?Answer: Acid Tails Question: This term describes when the solute concentration is greater.Answer: Hypertonic Question: This method of moving molecules across the membrane uses proteins in the membrane, and uses ATP energy to move molecules against (up) the concentration gradient.Answer: Transport Question: A cell with an internal salt of 0.1% salt is placed in a solution of 0.2% salt solution. Which way will water move, into or out of the cell?Answer: Out of the cell. Question: Diffusion is considered to be _______ ________ because no transport proteins are involved and no ATP energy is used. Answer: Passive Question: Is the glycerol head of a molecule polar or non-polar?Answer: Question: The whereby vesicles fuse with the plasma membrane and are able to "dump" the contents to the outside of the cell.Answer: Exocytosis Question: A cell with an internal salt concentration of 0.3% salt is placed in a solution of 0.2% salt solution. Which way will move, into or out of the cell?Answer: Into the Question: Hydrocarbon tails of fatty acids are saturated will or will not pack tightly together?Answer: They will pack together. Question: Hydrocarbon tails of fatty acids are UNsaturated will or will not pack tightly together?Answer: They will not pack together. Question: Which type of membrane protein is only to the surface of the membrane?Answer: Peripheral Question: type of membrane protein penetrates into the middle of the membrane?Answer: proteins Question: Which type of membrane protein crosses from through to the of the membrane?Answer: proteins Question: HIV uses which types of membrane protein to to immune cells?Answer: CD4 and CCR-5 cell proteins Question: These membrane carbohydrates have lipids to them.Answer: Question: These membrane carbohydrates have proteins to them.Answer: Question: Molecules like diatomic oxygen are _____ and _____ and can pass easily through the membrane.Answer: Nonpolar; Question: Molecules like sugars and water are _____ and _____ and cannot pass easily through the membrane.Answer: ; hydrophyllic Question: Special channel proteins known as ______ aid in the passage of water molecules through the membrane,.Answer: Question: The interior of the plasma membrane is considered to be _______ due to the non polar nature of the fatty acid tails.Answer: Question: The exterior of the plasma membrane is considered to be _______ due to the polar nature of the glycerol heads.Answer: Question: type of transport protein has a tunnel that is hydrophillic?Answer: Question: ______ proteins can bind to molecules and change shape to transfer them across the membrane.Answer: Question: What are the two of transport proteins?Answer: Channel and Question: This is the movement of like molecules down concentration gradient.Answer: Question: _______ transport moves molecules against their concentration gradient and uses carrier proteins.Answer: Active Question: _______ diffusion uses membrane proteins and no ATP energy to move molecules down the concentration gradient.Answer: Question: In osmosis water will always move _______ the hypertonic solution across the membrane.Answer: Question: Plant cells become ______ or firm when placed in a hypotonic solution.Answer: Question: What portion of the plant cell is responsible for the fact that the cell does not when placed in a hypotonic solution?Answer: Cell Question: A plant cell with an internal solute of 0.04% is placed in a solution with a 0.5% solution. Will the cell become turgid or flaccid?Answer: Question: When the plasma membrane pulls away from the cell wall in a cell that is placed in a hypertonic solution, it is known as:Answer: Question: ______ is a type of endocytosis in which a cell engulfs a particle by extending pseudopodia around it and creating a food vacuole.Answer: Question: ______ is a type of endocytosis in which a cell obtains fluid by creating vesicles around the fluid.Answer: Question: This type of occurs when vesicle formation is triggered by solute binding to receptors on the plasma membrane.Answer: -mediated endocytosis Question: LDL receptors in human cells use receptor-mediated endocytosis to take in _________.Answer: Question: Missing or defective LDL receptors in humans can result in high LDL numbers and those individuals have familial ________.Answer: |
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